Gas-meter.



1. R. ARMSTRONG.

GAS METER.-

APPLlATION FILED. NOM. I. 1917.

Patented 001;. 29, 1918,

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INVENTOR l. R. ARMSTRONG.

GAS METER. PPLICATIDN FILED NOV-7,19l7.

Patented Oct. 29, 1918.

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GAS METER.

. APPLICATION FILED NOV. I, |917- l l Patented Oct. 29, 1918.

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WITNEssEs -mman marras ramena onirica,

JAMES JR. RMSTRGNG, 0F PITTSURGH, PENNSYLVANIA, ASSIGNOR T0 EQUITABLE METER COMPANY, SYLVANIA.

'or PITTSBURGH, PENNSYLVANIA, a conrona'rron or PENN- Gas-METER. Y

Specification of Letters Maixent.v l Paterna-ined @ma 29, illll,

Application led November 7, 1917. Serial 310,200,718.

To all whom it may concern.' j

Be it known that I, JAMES R. ARMSTRONG, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Gas- Meters, of which the following is a specication.

formed in the main body of themeter or the meter casing; a main casing construction open at its top and of such a character that the top may be readily finished or ground, the entire upper end being on the same plane without projecting part or parts located below the said plane requiring finishing; a top-plate or closure body for said iinished tophaving its under side free of projectingsurfaces and formed with ports and adapted to carry the bellows, valves and valve actuating mechanism, said closure member being made either in one or two parts and designed to be applied to and re.- Inoved from the casing together with the bellows, valves and :actuating parts without a'ecting the connection between the gas sup line 5--5 of Y Fig. 6 is 'a sectional v iew'taken on linel ply and discharge and main casing; a main measuring chamber free of projecting parts' to interfere with inserting the bellows structure therein and removing the same therefrom; and to provide new and improved means within the casing chamber for guiding, anchoring and draining the bellows structures. 1.

In the accompanying drawings which illustrate applications of my invention,

igure 1 isa vertical sectional view of a meter embodying my invention;

Fig. 2 is a top plan'of the closure member;

Fig. 3 is a bottom viewV of said member;

Fig. '4: is a vertical sectional view taken on line 4 4 of Fig. 2;

Fig. 5 is a vertical sectional view taken on Fig. l2

6-6 of Fig. l7

being ada Fig. Tis a top plan view of the closure member showing a two-part member;

Fig. 8 is a detail side elevational view of anchor and guide means for a bellows structure; and

Fig.,9 is apart plan and a part sectional view of the structure shown in Fig. 8.

ln the embodiments of my invention as shown herein the meter is of the double or duplex bellows type,`there being two Vpairs of measuring chambers with one chamber of 'each pair filling while the other two chamare emptying. My present invention, j

bersv however, is applicable to a meter having v only one pair of measuring chambers'.

In the drawings, 2 designates the main cast metal open-top casing having its inte-'- rior divided by a centrally disposed partition 3 into two chambers 4 and 5. The casing is also formedwith an inlet opening or nozzle 6 and an outlet opening or nozzle 7, said openings being arranged in line with each other and below the upper end oi the casing. Adjacent the inlet nozzle the casing is formedinteriorly thereof with walls 8, thereby forming an inlet passage 9 for the gas, and adjacent the outlet nozzle with walls 10 to form the gas discharge passage 11. The casing is an open-topone, its upper end ted to be closed by a closure structure 12, t e latter being adapted to be secured to a ange 13 formed on the main casing and extending entirely 'around the top of the same. v

. t will be noted that the upper end of the casing including'its seating iiange 13 as well asA the walls entering into the formation of the inlet and discharge passages are on the same plane, thereby permitting the same to be readily machined or finished to present the desired contacting surface for the clo- `sure member 12. Member 12 is free from It will be noted that the construction just \described forms `a chamber 16 between the plate 12 is formed with two sets of ports, oney set for each pair of measuring chambers. Each set includes two inlet-ports 21 and 22 which establish communication betweenthe spaceinclosed by hood or cover 14 and the measuring chambers 4 and. Port 21 communicates with the main measuring chamber 4 (or chamber 5.) and port 22 with the bellows or supplemental chamber 19 (or 20).

Located between the inletports 21 and 22 is the outlet port 23 which is in communication with the outlet gas discharge passage 11 by means of passage 23 formed in the plate and located outside of the chambers 4 or 5. From the drawings it will be seen that passage or duct 23 is provided by pro- ]ecting a wall 23a upwardly'from the seating surface of the cap-plate, thereby providing said passage or passages 23 entirely within the cap-plate. The threeports 21, 22 and 23 open through a valve seat 24,

which latter is adapted to receive the' D-l sha edslide Valve 25.

he connections between the respective bellows structure and the flag rods 26 as well lfrom the flag rods to the valves as the mechanism for `transmitting motion part of the present invention, and hence I deem it unnecessary to describe 'the same herein, very similar mechanism being shown and described in my above mentioned patent and in Letters Patent issued to me May9,

`1911, Number 991,927.

The bellows structures 19 and 20 are secured to the cap-plate 12 lby means of brackets 27, and yscrews 28, and' each is pro'.

vided with 'a neck 30, the latter registering with the port 22 of the cap-plate whereby gas is vpassed to the interior of the bellows.

As particularly shown at the, lower portion of Fig. lland the detail views Figs. 8,-

a nd 9, I provide means for properly positioning the bellows structures within the respective chambers of themain lcasing and draining the same. As illustrated, thev pan portion l 31 of each bellows structure has secured thereto a downwardly projecting tubular T-shaped member 32 carrying a needle valve 33 anda guide and anchoring member 34. Member 34 is adapted to be entered between twov lugs or engagin members 35 formed on or securedto the interior of the casing chambers. For the ypurpose of per mitting access to the valves 33 and for rerms no j moving the accumulated liquid from the chambers, I provide the casing with holes 36.

It will be understood that the meter may be readily assembled and that the bellows structures together with thevalves, etc., mayJ beplaced in position and removed from the main casing by lowering and raising the capplate and that the chambers 4 and 5 are free from any projecting parts that would interfere. with .the removalof or placing the bellows in position, and bythe employment an open-top casing wformed Awith gas inlet and discharge' openings and having interiorly disposed walls adjacent said openings entering into the formation of'passages for gas 'with -the upper edges of said-walls disposed in the same plane as the upper end of the casing, and a ported cap-plate-seated upon the casing and said walls, said openings being located below the cap-plate.

2. In a gas meter, the combination with an open-top casing lformed with' alined gas inlet and discharge openings 'adjacent the open top and having interiorly disposed `walls adjacent said openings entering into 1` the formation of passages or gas with the upper edges of. said walls disposedy in the same plane as the upper end of the casing, and a ported cap-plate seated upon the cas mg located below'4 the cap-plate.

3.' In a gas meter, the combination with an open-top casing having a seating flange at its upper end and formed with gas inlet and discharge openings'below said flange, ^)a ported cap-plate seated. upon said ange, "a hood abovethe cap late also seated on the ange, a chamber elow lthe cap plate, a bellows structure in said chamber, and

means controlling communication between 1. In a gas meter, the combination with and said walls, said openings being.

belowthe cap plate, a bellows structure in 5. In a gas meter, thev combination with an open-top casing formed with gas inlet and discharge openings below its open top, a

ported cap-plate fitted to the casing above the said openings, a main chamber below the cap-plate, a bellows structure secured to the' cap-plate and disposed within the "main chamber, a hood above the cap-plate, a valve on the cap-plate controlling communication between the hood and the .main chamber and bellows structure, and valve actuating means on the cap-plate operatively connected with the bellows structure.

6. Ina gas meter, the combination with an h open-top casing having a seating {iange at its upper end and formed with gas inlet and discharge openings below the flange, a ported cap-plate seated on the flange, a main chamber below the cap-plate, a bellows structure secured to the cap-plate, and disposed within the main chamber, a hood above the capplate `also seated on the flange, a valve on the cap-plate controlling communication be-v tween the hood and the main chamber and bellows structure, and valve actuating means on the cap plate operatively connected with thebellows structure.

7. In a gas meter, the combination with an' said chambers each having a gas discharge port, a bellows structure secured to each lplate,.said casing having gas inlet andoutlet openings disposed below the cap plates, a gas discharge passage, and a duct within the cap-plate forming communication betweerl the discharge ports of the cap-plates and the gas discharge passage.

9. In a gas meter, the combination with an open-top casing having its interior lower portion provided with engaging means, a ported cap-plate seated on the upper end of the casing,1 a bellows structure secured to the capplate, said bellows structure' provided with means adapted to coact with the engaging means of the casing for positioning the'.bellows within the casing.

10. In a gas meter, the combination with an open-top casing having its interior lower portion provided with engaging means, a ported cap-plate seated on the'upper end of the casing, a bellows structure secured to the cap-plate, said bellows structure provided with means. adapted to coact with the engaging means'of the casing for positioning the bellows within the casing, said means on l 'the bellows structure including a tubular member in communication with the interior of the bellows. U

l1. In a gas meter, the combinatlon with an open-top casing-having its interior loweil portion provided with engaging means, a ported cap-plate seated onthe upper end of the casing, a bellows structure secured to the cap-plate, said bellows structure provided 'with means adapted to coact with the enga-g ing `means of the casing Jfor positioning thel bellows within the casing, said means in.-

cluding a valve-controlled tubular member in communication with the lnterior of the bellows.

In'testimony whereof I afliX my-signature in presence oftwo witnesses.,

JAMES R. ARMSTRONG. 

